Soft matters, or the recursions with massive spinors
From MaRDI portal
Publication:2048069
DOI10.1007/JHEP05(2021)238zbMATH Open1466.83063arXiv2005.08981OpenAlexW3165772728MaRDI QIDQ2048069
Author name not available (Why is that?)
Publication date: 4 August 2021
Published in: (Search for Journal in Brave)
Abstract: We discuss recursion relations for scattering amplitudes with massive particles of any spin. They are derived via a two-parameter shift of momenta, combining a BCFW-type spinor shift with the soft limit of a massless particle involved in the process. The technical innovation is that spinors corresponding to massive momenta are also shifted. Our recursions lead to a reformulation of the soft theorems. The well-known Weinberg's soft factors are recovered and, in addition, the subleading factors appear reshaped such that they are directly applicable to massive amplitudes in the modern on-shell language. Moreover, we obtain new results in the context of non-minimal interactions of massive matter with photons and gravitons. These soft theorems are employed for practical calculations of Compton and higher-point scattering. As a by-product, we introduce a convenient representation of the Compton scattering amplitude for any mass and spin.
Full work available at URL: https://arxiv.org/abs/2005.08981
No records found.
No records found.
This page was built for publication: Soft matters, or the recursions with massive spinors
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q2048069)
